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Motivation is a photography blog that discusses the creative aspects of photography. The posts will include thoughts about images and their interpretation, photographers and their work, technique, workflow, my ongoing projects, and perhaps even the occasional off topic rant.

Anti-Aliasing And Its Effect On HD Video

I have not personally been particularly interested in video production and thus have not even used the video capability of my Canon 5D MKII as of yet. However, I read a very interesting article that was referenced on the Outback Photo website about the effect of anti-aliasing filters on HD video obtained via the current generation of dSLRs.

The article, entitled "Aliasing" is by Barry Green and can be found here. I found two aspects of the article quite interesting. The first was the detailed general discussion about aliasing and the artifacts it can introduce and the second was the discussion related to the fact that the type of anti-aliasing filters appropriate for high resolution digital still images and video are quite different. When both types of imaging are combined in a single camera body a compromise must be made with regards to the anti-aliasing filter (and the compromise has rightly been made to sacrifice the optimum video anti-aliasing filter in order to have the appropriate anti-aliasing for still images).

Besides being a well-written and extremely interesting article, it is also chock-full of real life video examples. It makes for some fascinating and enlightening reading.